Flow Chart of Troubleshooting
10-28
Tx On
Tx Level : 0
10-2-5. DCS, PCS Tx
No
Resolder or change
UCP300
Check VBAT
Resolder PAM100 or U100
4
5
7
8
Nomal
Condition Catch
The Channel
RFS100 Pin
#1(c)
≥
28dBm
No
Resolder or Change
RFS100
No
Yes
Check soldered status of
R100, C102, ANT100, ANT200, R102
Yes
Resolder or Change
L100, C100, L101
No
Yes
PAM100
pin #27,28:high,
#1:low?
1
2
3
PAM100 pin #8
≥
26dBm ?
Yes
Resolder or change
UCP300
PAM100
pin #25
≒
1.2V
?
No
Yes
PAM100
pin #26
≥
3.4V?
No
Yes
8dBm>
PAM100 pin#21
>0dBm?
No
Yes
Resolder or change
R103, R107, R108
6
Содержание SGH-F400
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